extremely

adverb

ex·​treme·​ly ik-ˈstrēm-lē 

1

: in an extreme manner

2

: to an extreme extent

Synonyms of extremely

• very
• incredibly
• terribly
• highly
• too
• so
• badly
• damned
• severely
• damn
• really
• super
• desperately
• intensely
• seriously
• far
• exceptionally

Examples of extremely in a Sentence

an extremely hot day

Recent Examples on the Web

Deposition systems add extremely thin layers of material onto a silicon wafer. — Christopher McFadden, Interesting Engineering, 7 Sep. 2026

September 9 will be an extremely busy day for the Prince of Wales. — Rachel Burchfield, InStyle, 6 Sep. 2026

Besides, some jukebox musicals are extremely clever and should get credit for it. — Christopher Arnott, Hartford Courant, 6 Sep. 2026

Unfortunately, because the militias are extremely willing to use force against their own people, including against security forces, the government finds itself in a position of backing down in the face of these militias. — Benjamin Weinthal, FOXNews.com, 6 Sep. 2026

Word History

First Known Use

1509, in the meaning defined at sense 1

Phrases Containing extremely

• extremely high frequency
• extremely low frequency

Rhymes for extremely

• seemly
• unseemly